Washington Gov. Jay Inslee announced in a video Friday morning that he is running for president.

Inslee, a Democrat, is hinging his candidacy on the message of fighting climate change. In the one-and-a-half-minute video he posted to Twitter on Friday morning, he said fighting climate change is "the most urgent challenge of our time."

"We're the first generation to feel the sting of climate change and we're the last that can do something about it," he said.

Inslee joins a growing field of Democratic candidates eager to challenge Republican President Donald Trump in the 2020 election. Other Democratic candidates who have entered the race include U.S. Rep. Tulsi Gabbard, senators Kirsten Gillibrand and Elizabeth Warren, as well as Julian Castro, former secretary of the Department of Housing and Urban Development in the Obama administration.